12 Mar 2026 - 04:41 EDT
12 Mar 2026 - 08:41 UTC
12 Mar 2026 - 08:41 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 41°N - 119°W - Near Humboldt County, NV
30 frame animation displayed.
To enlarge, pause animation & click the image. Hover over popups to zoom. Use slider to navigate.
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1730 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1731 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1732 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1733 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1734 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1735 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1736 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1737 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1738 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1739 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1740 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1741 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1742 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1743 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1744 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1745 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1746 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1747 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1748 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1749 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1750 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1751 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1752 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1753 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1754 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1755 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1756 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1757 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1758 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 25 Feb 2026 - 1759 UTC
GLM Flash Extent Density over Band 13 is the number of lightning flashes that occur within a grid cell over a given period of time. FED was the first GLM product routinely available to weather service forecasters. The FED product is the best single metric to convey both the quantity and extent of lightning activity. It is useful for both storm trending applications and to depict geographic coverage.
In the FED13 visualization, GLM is superimposed on infrared Band 13 rendered in gray scale.
GLM data is produced between 54°N and 54°S.
• For more details, see the Geostationary Lightning Mapper Quick Guide, (PDF, 1.98 MB)